Answer:
Potential energy, PE = 980 J
Explanation:
It is given that :
Mass of the barrel, m = 20 kg
Height above the ground surface, h = 5 m
We have to find the potential energy of the barrel. Potential energy is given by the product of mass of an object, acceleration due to gravity and height above the ground surface.
Mathematically, the expression for potential energy is given by :
PE=mgh
[tex]PE=20\ kg\times 9.8\ m/s^2\times 5\ m[/tex]
PE= 980 Joules
Hence, this is the required solution.
